The Rude Pundit has liveblogged the HCR summit, and I think this is the central point:

10:47: What Obama has done here is fascinating. He’s making a public
demonstration of the competence and bipartisanship of the Democrats. If
Republicans were smart, they’d walk out. They’re about to get their
asses handed to them. A walk-out would make change the story. But, you
know, they’re Republicans. They’re gonna try to bully their way out of
this.

A.